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<td class="content-excerpt-pattern-container mobile-resize-text " style="padding: 0px; border-collapse: collapse; padding: 0 0 0 24px"> <h1 id="SFUTestCoverage-Overview" style="margin: 10px 0 0 0; margin-top: 0; font-size: 24px; font-weight: normal; line-height: 30px; margin: 40px 0 0 0; margin-top: 0">Overview</h1> <p style="margin: 10px 0 0 0">Asterisk 15 introduced a new feature that allows you to utilize multiple streams (both audio and video) to create cool applications for things like video conferencing. Some tests were created to ensure that everything is working as intended, and this wiki page aims to document those tests as well as older ones that are still relevant to SFU (selective forwarding unit) test coverage. This will help us understand the depth of coverage we have for SFU testing and what needs to be done in the future to provide a solid foundation.</p>
<div class="aui-message success shadowed information-macro">
<span class="aui-icon icon-success">Icon</span>
<div class="message-content">
<p style="margin: 10px 0 0 0; margin-top: 0">To get started with SFU testing and WebRTC, look at <a href="https://wiki.asterisk.org/wiki/display/AST/WebRTC+tutorial+using+SIPML5" style="color: #3b73af; text-decoration: none">WebRTC tutorial using SIPML5</a>.</p>
</div>
</div> <h2 id="SFUTestCoverage-PreAsterisk15" style="margin: 10px 0 0 0; font-size: 20px; font-weight: normal; line-height: 30px; margin: 40px 0 0 0">Pre Asterisk 15</h2> <p style="margin: 10px 0 0 0">Some tests that were introduced in versions prior to the release of Asterisk 15 but are still relevant to SFU test coverage (at least for future test reference).</p>
<ul style="margin: 10px 0 0 0">
<li>audio-video
<ul style="margin: 10px 0 0 0; margin-top: 0">
<li>multiple-audio
<ul style="margin: 10px 0 0 0; margin-top: 0">
<li>accept inbound offer with multiple audio streams and one video stream, but only accept the first audio stream and the video stream</li>
</ul> </li>
<li>multiple-video
<ul style="margin: 10px 0 0 0; margin-top: 0">
<li>accept inbound offer with multiple video streams and one audio stream, but only accept the first video stream and the audio stream</li>
</ul> </li>
<li>codec-mismatch
<ul style="margin: 10px 0 0 0; margin-top: 0">
<li>accept inbound request with audio codec mismatch</li>
<li>accept inbound request with video codec mismatch</li>
<li>decline inbound request with codec mismatch (both audio and video)</li>
</ul> </li>
<li>hold-declined
<ul style="margin: 10px 0 0 0; margin-top: 0">
<li>offer with an audio stream and an inactive video stream, establish a connection, then send a re-invite with audio on hold and get a 200 OK response</li>
</ul> </li>
<li>initial-declined
<ul style="margin: 10px 0 0 0; margin-top: 0">
<li>respond with a 488 to an offer with a declined audio / video stream matching the codecs of the endpoint</li>
</ul> </li>
</ul> </li>
<li>video
<ul style="margin: 10px 0 0 0; margin-top: 0">
<li>multiple-video
<ul style="margin: 10px 0 0 0; margin-top: 0">
<li>accept inbound offer with multiple video streams, but only accept the first stream and decline the others</li>
</ul> </li>
</ul> </li>
<li>audio
<ul style="margin: 10px 0 0 0; margin-top: 0">
<li>multiple-audio
<ul style="margin: 10px 0 0 0; margin-top: 0">
<li>accept inbound offer with multiple audio streams, but only accept the first stream and decline the others</li>
</ul> </li>
</ul> </li>
<li>audio-video-app
<ul style="margin: 10px 0 0 0; margin-top: 0">
<li>accept inbound offer with one audio stream and one video stream, but decline application streams</li>
</ul> </li>
<li>hold-inactive
<ul style="margin: 10px 0 0 0; margin-top: 0">
<li>audio
<ul style="margin: 10px 0 0 0; margin-top: 0">
<li>test holding an audio stream with a re-invite as well unholding</li>
</ul> </li>
</ul> </li>
</ul> <h2 id="SFUTestCoverage-NewInAsterisk15" style="margin: 10px 0 0 0; font-size: 20px; font-weight: normal; line-height: 30px; margin: 40px 0 0 0">New In Asterisk 15</h2> <p style="margin: 10px 0 0 0">The tests added in Asterisk 15 are all under <strong>tests/channels/pjsip/sdp_offer_answer/incoming/nominal/multiple-media-stream</strong>.</p>
<ul style="margin: 10px 0 0 0">
<li>audio-video
<ul style="margin: 10px 0 0 0; margin-top: 0">
<li>bundled
<ul style="margin: 10px 0 0 0; margin-top: 0">
<li>accept inbound offer with multiple video streams and one audio stream and bundled enabled</li>
</ul> </li>
<li>multiple-audio
<ul style="margin: 10px 0 0 0; margin-top: 0">
<li>accept inbound offer with multiple audio streams and one video stream</li>
</ul> </li>
<li>multiple-video
<ul style="margin: 10px 0 0 0; margin-top: 0">
<li>accept inbound offer with multiple video streams and one audio stream</li>
</ul> </li>
</ul> </li>
<li>video
<ul style="margin: 10px 0 0 0; margin-top: 0">
<li>multiple-video
<ul style="margin: 10px 0 0 0; margin-top: 0">
<li>remove multiple video streams once a call has been established</li>
<li>accept inbound offer with multiple video streams</li>
<li>add multiple video streams once a call has been established</li>
</ul> </li>
</ul> </li>
<li>audio
<ul style="margin: 10px 0 0 0; margin-top: 0">
<li>multiple-audio
<ul style="margin: 10px 0 0 0; margin-top: 0">
<li>remove multiple audio streams once a call has been established</li>
<li>accept inbound offer with multiple audio streams</li>
<li>add multiple audio streams once a call has been established</li>
</ul> </li>
</ul> </li>
</ul> <h2 id="SFUTestCoverage-Improvements" style="margin: 10px 0 0 0; font-size: 20px; font-weight: normal; line-height: 30px; margin: 40px 0 0 0">Improvements</h2> <p style="margin: 10px 0 0 0">While we do have decent test coverage, there's always room for improvements! This list can and should be contributed to with scenarios that will help strengthen SFU test coverage.</p>
<ul style="margin: 10px 0 0 0">
<li>bundled
<ul style="margin: 10px 0 0 0; margin-top: 0">
<li>accept inbound offer with multiple audio streams and one video stream and bundled enabled</li>
<li>accept inbound offer with multiple audio and video streams and bundled enabled</li>
</ul> </li>
<li>audio-video
<ul style="margin: 10px 0 0 0; margin-top: 0">
<li>accept inbound offer with audio and video then remove all audio streams</li>
<li>accept inbound offer with audio and video then remove all video streams</li>
<li>add a video stream once a call has been established with audio and video</li>
</ul> </li>
<li>video
<ul style="margin: 10px 0 0 0; margin-top: 0">
<li>accept inbound offer with multiple video streams then hold a certain number of video streams</li>
<li>accept inbound offer with multiple video streams then add an audio stream</li>
<li>accept inbound offer with multiple video streams, but only allow the maximum allowed number (max_video_streams)</li>
<li>offer a set of codecs with multuple video codecs and get them back in priority order</li>
<li>test holding a video stream with a re-invite as well as unholding</li>
</ul> </li>
<li>audio
<ul style="margin: 10px 0 0 0; margin-top: 0">
<li>accept inbound offer with multiple audio streams then hold a certain number of audio streams</li>
<li>accept inbound offer with multiple audio streams, then add a video stream</li>
<li>accept inbound offer with multiple audio streams, but only allow the maximum allowed number (max_audio_streams)</li>
</ul> </li>
</ul> <p style="margin: 10px 0 0 0">The above scenarios are more general. If we get into more specific scenarios (like ConfBridge), things still need to work. Certain SFU APIs may be needed for this, such as abiltiy to pull down stream topology. Here's a list of scenarios that could be tested and make use of said API.</p>
<ul style="margin: 10px 0 0 0">
<li>confbridge
<ul style="margin: 10px 0 0 0; margin-top: 0">
<li>add user with audio and video, check topology to make sure it's in the correct state, add another user with audio and video, check topology again</li>
<li>add user with audio and video, check topology, remove user, check topology</li>
<li>add user with audio and video, check topology, add another user with some different audio or video codecs, check topology, remove a user, check topology</li>
<li>add user with only audio, check topology</li>
<li>add user with only audio, check topology, add user with audio and video, check topology</li>
<li>add user with audio and video, check topology, add user with only audio, check topology</li>
<li>add user with only audio, check topology, add two more users with audio and video, check topology, remove user with only audio, check topology</li>
<li>add user with only video, check topology</li>
<li>add user with only video, check topology, add user with audio and video, check topology</li>
<li>add user with audio and video, check topology, add user with only video, check topology</li>
<li>add user with only video, check topolgoy, add two more users with audio and video, check topology, remove user with only video, check topology</li>
<li>add user with only audio, check topology, add user with only video, check topology</li>
<li>add user with only video, check topology, add user with only audio, check topology</li>
</ul> </li>
</ul> <p style="margin: 10px 0 0 0">Of course, this is dependent on the ability to pull down information such as the topology from the ConfBridge, but also provides a thorough testing of stream topologies and the API itself. Future API changes should also come with a set of tests to ensure everything is working as it should!</p> </td>
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